Finding the Fourth Proportional to 2,020.72, 2,789.97 and 1,489.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.72 : 2,789.97 = 1,489.67 : x
2. Step 2: Convert to fraction form
   2,020.72/2,789.97 = 1,489.67/x
3. Step 3: Cross multiply
   2,020.72x = 2,789.97 × 1,489.67
4. Step 4: Simplify right side
   2,020.72x = 4,156,134.61
5. Step 5: Solve for x
   x = 4,156,134.61/2,020.72
6. Step 6: Final answer
   x = 2,056.76